dacrolon造句

• We are specialized in producing sets of large - hex high - strength bolts , sets of torshear type high - strength bolts , sets of dacrolon bolts and cheese head studs for arc stud welding
  我公司技术力量雄厚，生产设备精良，检测设备完善，是生产钢结构用高强度大六角螺栓连接副、扭剪型螺栓连接副、达克罗螺栓连接副和电弧螺柱焊用圆柱头焊钉的专业公司。